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    Towards a Collaborative Authoring Tool for Cultural Heritage Applications: Modelling the Development Process Between Curators and Developers
    (The Eurographics Association, 2024) Southall, Ethan; Hulusic, Vedad; John, David; Hargood, Charlie; Ó hOisín, Niall; Corsini, Massimiliano; Ferdani, Daniele; Kuijper, Arjan; Kutlu, Hasan
    Both museums and virtual museums go through a curation process for creating exhibitions, with a variety of methods available. These are often collaborative, requiring both cultural heritage professionals and designers or developers working together. Mixed reality has the potential to enhance this process for the developer and client, in the form of a collaborative mixed reality authoring tool. It is important to understand the process of collaborative development of cultural heritage applications so that the authoring tool could be designed to cater for these needs.In this paper, a user study is presented that analyses the process of delivering three cultural heritage projects by an experienced development company. As a result, a model that captures project stages and collaborative aspects with the clients is created and validated, existing bottlenecks are identified and three authoring tool concepts that could improve the process are generated and discussed. The resulting tool is proposed to aid the collaboration process during the prototype and initial design stages of the development process, which will aid future research.
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    MiDRASH - A Project for Computational Analysis of Medieval Hebrew Manuscripts
    (The Eurographics Association, 2024) Vasyutinsky Shapira, Daria; Kurar-Barakat, Berat; Gogawale, Sharva; Suliman, Mohammad; Dershowitz, Nachum; Corsini, Massimiliano; Ferdani, Daniele; Kuijper, Arjan; Kutlu, Hasan
    MiDRASH is an international effort that aims to construct a groundbreaking interdisciplinary methodology for a global approach to the study of the treasure trove of medieval literary manuscripts in Hebrew script. It studies materiality, textuality, transmission and historical contexts of the digitized manuscripts in Hebrew, Aramaic, Judeo-Arabic and other vernacular languages.
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    Computer-Assisted Collaborative Fragment Matching of Incomplete Stone Artifacts
    (The Eurographics Association, 2024) Houska, Peter; Masur, Alessandra; Kloiber, Simon; Lengauer, Stefan; Karl, Stephan; Preiner, Reinhold; Corsini, Massimiliano; Ferdani, Daniele; Kuijper, Arjan; Kutlu, Hasan
    Archaeological artifacts are often only preserved in fragments. Their reassembly is thus a common task for conservators and archaeologists. Unfortunately, this reassembly process is anything but trivial. Major complicating factors are given if fragments are (1) eroded and weathered, (2) incomplete and missing, and (3) expose little to no geometric surface features or surface-color variations. Artifacts made of white marble, which was generally used in antiquity, pose an additional challenge for reassembly due to (4) their weight and (5) the fragility of the crystalline material. This holds for both freestanding marble sculptures and relief stones or otherwise decorated slabs. In this work, we focus on the reassembly problem of marble slabs with a flat surface, for which fragments are pre-oriented such that their top faces point upward. While computer-based reassembly algorithms exist, they are typically tuned for specific types of artifacts and rely on joining fragments based on a combination of a geometric and surface-color correspondence. Hence, methods that reassemble broken and deteriorated white marble slabs typically perform worse than the respective domain experts. Due to the foreseeable shortcomings of reassembly algorithms when applied to eroded, incomplete, and widely feature-less white marble fragments, we refrain from designing an algorithm for the specific problem at hand. Instead, we incorporate a large number of users from the broad public in the reassembly process. To that end, we provide an intuitive interactive web platform that allows users access to 3D digital twins of the Christian marble-slab fragments. Transferring the fragments to the virtual domain also enables the introduction of algorithmic automatisms to assist the users in the process. In this paper, we present the system design and the provided basic geometric automatisms, and report on their efficiency and utilization in an ongoing large-scale citizen-science experiment that involves several thousand users.